title: High efficiency Nd:YAG ceramic eye-safe laser operating at 1442.8 nm.
abstract: We report on a diode-pumped Nd:YAG ceramic laser operating at 1442.8 nm for the first time. In our experiment, two different Nd:YAG ceramics with the Nd-doped concentrations of 1.0 and 0.6 at. % and a Nd:YAG with the Nd-doped concentration of 1.0 at. % were used as the laser gain mediums, respectively. At a pump power of 20.7 W, a maximum output power of up to 3.96 W with optical-to-optical efficiency of up to 19.1% was obtained by using the 1.0 at. % Nd-doped ceramic as the laser gain medium. To the best of our knowledge, this is the highest output power of a LD-pumped 1.44 μm Nd:YAG ceramic laser and the highest optical-to-optical efficiency of a LD-pumped 1.44 μm Nd-doped crystal laser.
authors.forename: H N
authors.initials: HN
authors.lastname: Zhang
authors.forename: X H
authors.initials: XH
authors.lastname: Chen
authors.forename: Q P
authors.initials: QP
authors.lastname: Wang
authors.forename: X Y
authors.initials: XY
authors.lastname: Zhang
authors.forename: J
authors.initials: J
authors.lastname: Chang
authors.forename: L
authors.initials: L
authors.lastname: Gao
authors.forename: H B
authors.initials: HB
authors.lastname: Shen
authors.forename: Z H
authors.initials: ZH
authors.lastname: Cong
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Liu
authors.forename: X T
authors.initials: XT
authors.lastname: Tao
authors.forename: P
authors.initials: P
authors.lastname: Li
mesh_terms: D002516:Ceramics; D005123:Eye; D007834:Lasers; D012449:Safety